可以直接用API改变textbox的扩展样式
VERSION 5.00
Begin VB.Form Form1
Caption = "Form1"
ClientHeight = 6135
ClientLeft = 165
ClientTop = 735
ClientWidth = 7080
LinkTopic = "Form1"
ScaleHeight = 6135
ScaleWidth = 7080
StartUpPosition = 3 'Windows Default
Begin VB.CommandButton Command2
Caption = "Command2"
Height = 375
Left = 4800
TabIndex = 4
Top = 5040
Width = 1455
End
Begin VB.PictureBox Pic1
BorderStyle = 0 'None
Height = 495
Left = 960
ScaleHeight = 495
ScaleWidth = 2655
TabIndex = 5
Top = 2880
Width = 2655
End
Begin VB.Timer Timer1
Interval = 10
Left = 240
Top = 3120
End
Begin VB.CheckBox Check1
Caption = "选择，再看按钮的文字，然后不要选择"
Height = 855
Left = 960
TabIndex = 1
Top = 3600
Width = 4575
End
Begin VB.CommandButton Command1
Caption = "歪歪的VB技巧演示"
Height = 1695
Left = 360
TabIndex = 0
Top = 960
Width = 5295
End
Begin VB.TextBox Text1
Height = 495
Left = 1080
MultiLine = -1 'True
TabIndex = 3
Top = 5040
Width = 2415
End
Begin VB.Label Label1
